Rotary motor.



D. URAYSSAC.

ROTARY MOTOR.

APPLICATION FILED MAY 22, 1013.

Patented Dec. 8, 1914.

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YIIIIIIIIIIIIIIIQzIRI/P Z? i/ zzkm/m Jarfi DESIRE CRAYSSAC, orVILLEURBANNE, FRANCE.

ROTARY MOTOR.

Application filed May 22, 1913.

To all whom it may concern:

Be it known that I, Diismr'i CRAYSSAC, a citizen of the French Republic,residing at Villeurbanne, Rhone, in France, have invented certain newand useful Improvements in Rotary Motors, of which the following is aspecification.

This invention relates to improvements in the rotary motor described inmy application for patent Serial No. 742900.

The invention provides an improved method of articulating the rods whichconnect the pistons to the disks mounted on the crank shaft described inmy aforesaid application No. 742,900.

The invention is illustrated in the annexed drawing.

Figure 1 is a partial front view of the motor, part being shown insection. Fig. 2 is a longitudinal section of a cylinder on line 22 ofFig. 1. Fig. 3 illustrates on a larger scale, the connection between apis ton and its rod.

a indicates the cylinders, b the pistons, (Z the crank shaft, the crankof which is at g.

The rods or stirrup like members a which connect the pistons to thedisks 7' of the crank shaft are mounted in the following manner. On theexterior face of each piston is arranged a small round bar of hard steelit forming a roller bearing for the horizontal part of the member 0which carries a small flat bar or plate of hard steel is on which thebar it bears during rotation of the motor, and rolls with a movement tothe right or to the left in accordance with the swinging of the bar. Thepiston is connected to the rod or member 0 by a bridge 2' which onlyserves to retain it in position when the motor is stopped. The disks 7to which the ends of the rods or members 0 are Specification of LettersPatent.

Patented Dec. 8, 1914.

Serial No. 769,127.

fixed are provided with hard steel rollers j sunk in shoulders f. Theends of the rods are terminated by eyes a embracing the rollers j withwhich they make contact during rotation of the motor. Small plates ofhard steel 0 form contact surfaces for the rollers. In this manner, thebearing of the rods against the rollers j and the bearing of the pistonsagainst the rods by means of the rollers h is assured in a constantfashion during the action of the ,motor. The bearing surfaces are verysmall which reduces to the minimum the power absorbed by friction atthese points.

What I claim as my invention and desire to secure by Letters Patent ofthe United States is In a rotary motor of the character described, thecombination of radial cylinders, pistons having their entrance at theouter ends of said cylinders, disks mounted on the motor shaft,stirrup-like members, parts of which are horizontal, rollers arranged onthe exterior faces of said pistons adapted to bear against saidhorizontal parts of said stirrup-like members during rotation of themotor, rollers sunk in said disks, eyes on the ends of said stirrup-likemembers, embracing said last mentioned rollers, and having constantcontact therewith during rotation of the motor, and bridges connectingthe pistons to said stirrup-like members when the motor is at rest.

In witness whereof I have signed this specification in the presence oftwo witnesses.

DESIRE CRAYSSAC.

Witnesses JEAN GERMAIN, GUILLAUME PIOCHE.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents, Washington, D. 0.

